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Dairy Cattle And Reproduction
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Subjects
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industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
mare ovulation
penis proper
Dairy Cattle Lactation (standard)
Holstein Cow
2. When are steers and heifers weaned from bottle feeding?
Dairy Cattle Gestation
6-8 weeks
seminiferous tubules
effects of BST
3. 45-60 days after breeding; re-breed as required
penis proper
elastrator
dairy cattle pregnancy check
stag
4. Start of the reproductive tract for the female. located outside of the body
vulva
1. more cost effective - 2. powdered milk is in excess production
castration
4 major reasons for culling dairy cows
5. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
1. more cost effective - 2. powdered milk is in excess production
hormones
Sperm growth rate
dartos muscle
6. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
Dairy Cattle Lactation (standard)
effects of estrogen
reasons for castration
ewe estrus
7. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
seminiferous tubules
purpose of Breeding Soundness Exam (BSE) for males
hypothalamus and pituitary gland
effects of estrogen
8. Luteolysis happens because of the ____________ hormone
Bull's fibro-elastic penis
prostaglandin
penis sizes vs delivering methods
pelvis
9. Look for infection - split - and rupture of the penis
dartos muscle
sow gestation
penis and prepuce observation (BSE)
dry matter and water
10. (male) pushes the testes outward toward the legs for a cool-down off of the body
effects of BST
cremaster muscle
castration
spermatogenesis
11. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
what has to happen for males for copulation to occur
mare estrus cycle
van deferens
effects of BST
12. (switzerland) 2nd in size and milk production - most muscle -
ewe's estrous cycle
mare ovulation
1. more cost effective - 2. powdered milk is in excess production
Brown Swiss Cow
13. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
scrotal circumference (BSE)
estrus
cryptorchid
polyestrous
14. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
testis (gonads)
accessory sex glands
van deferens
polyestrous
15. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
Sperm growth rate
pelvis
Dairy calves are removed from cow at birth to...
dairy cattle pregnancy check
16. Allows extension of penis without fibro-elastic penis
vulva
ewe gestation
functions of progestrone
sigmoid flexure
17. 1-2 days
ewe estrus
Size of cow in relation to the amount of milk produced
Dairy Cattle Lactation (standard)
Follical Stimulating in females
18. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
sperm cell
age and castration
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
monestrous
19. Depository for semen during insemination. where urine leaves the body
sigmoid flexure
spermatogenesis
sperm cell
vagina
20. Not under a timeline - cow can not be sold as steak
Grading choice
cervix
butterfat
elastrator
21. (LH) stimulates the Leydig cells to produce testosterone
penis proper
Lutinizing Hormone in males
Culls bulls earlier (2 reasons)
mare estrus
22. 2 month growth cycle. stored in the epididymis of the bull
scrotal circumference (BSE)
penis and prepuce observation (BSE)
Sperm growth rate
sigmoid flexure
23. Urinary calculi.
kidney stones also called ________ ___________ can develop in the sigmoid flexure
spermatogenesis
leydid or interstitial cells
hormones
24. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
cow estrus cycle
uterus
eminal vesicles
Dairy calves are removed from cow at birth to...
25. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Lutinizing Hormone in females
hormones
Size of cow in relation to the amount of milk produced
Dairy calves are removed from cow at birth to...
26. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
cryptorchid
reasons for castration
Dairy calves are removed from cow at birth to...
scrotal circumference (BSE)
27. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
epididymis: definition - 3 parts - 4 functions
cow ovulation
growth lost from castration methods (knife & band)
vulva
28. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
things to check for in a breeding soundness exam (BSE)
estrus
Follical Stimulating in females
humans: stress level vs sperm
29. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
hypothalamus and pituitary gland
#1 cost in production
Where livelihood is in agriculture
Hard
30. Contains and regulates the temp of the testes for sperm production
cow ovulation
seminiferous tubules
scrotum
growth lost from castration methods (knife & band)
31. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
eminal vesicles
penis proper
sigmoid flexure
testis (gonads)
32. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
colostrum
reasons for castration
libido test (BSE)
sow estrus cycle
33. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
behavioral signs of estrus
vulva
Jersey Cow
sow estrus cycle
34. Why does estrus happen before ovulation?
functions of progestrone
Hormones from both the fetus and the mom.
colostrum
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
35. Milk ~305 days - dry 60 days prior to calving
elastrator
Dairy Cattle milking schedule
mare estrus
polyestrous
36. 26 hours after estrus begins
humans: stress level vs sperm
ewe ovulation
cow gestation
Culls bulls earlier (2 reasons)
37. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
rectal palpation (BSE)
Grading choice
elastrator
ewe estrus
38. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
cremaster muscle
Bull's fibro-elastic penis
burdizzo
4 major reasons for culling dairy cows
39. Parturition is controlled by...
semen evaluation (BSE)
Hormones from both the fetus and the mom.
mastitis
things to check for in a breeding soundness exam (BSE)
40. 147 days
ewe gestation
testosterone
dartos muscle
Follical Stimulating in females
41. 4-6 days
Grading choice
scrotum
mare estrus
sow gestation
42. Urinary calculi.
kidney stones also called ________ ___________ can develop in the sigmoid flexure
epididymis: definition - 3 parts - 4 functions
prostaglandin
estrous
43. Why Dairy calves are fed powdered milk.
burdizzo
organs used in spermatogenesis
epididymis: definition - 3 parts - 4 functions
1. more cost effective - 2. powdered milk is in excess production
44. Microscopic - make sure not sterile - very few bulls are actually tested
semen evaluation (BSE)
Dairy calves are removed from cow at birth to...
ewe's estrous cycle
spermatogenesis
45. 26 hours after estrus begins
castration
libido test (BSE)
ewe ovulation
hypothalamus and pituitary gland
46. 45-60 days after breeding; re-breed as required
cow estrus cycle
dairy cattle pregnancy check
visual evaluation (BSE)
purpose of Breeding Soundness Exam (BSE) for males
47. Luteolysis happens because of the ____________ hormone
prostaglandin
van deferens
oviducts
vulva
48. Start of the reproductive tract for the female. located outside of the body
vulva
4 major reasons for culling dairy cows
Grading choice
Blood
49. 1-2 days
ewe estrus
normal presentation of the fetus
testosterone
hypothalamus and pituitary gland
50. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
Reasons for gestation length being affected
reasons for castration
semen evaluation (BSE)
butterfat
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